General Information:
Chemical Formula:
Mn++3(PO4)2·3(H2O)
Composition:
(Molecular Weight = 408.80 gm)
Manganese 40.32 % Mn
Phosphorus 15.15 % P
Hydrogen 1.48 % H
Oxygen 43.05 % O
Empirical Formula:
Mn2+3(PO4)2·3(H2O)
IMA Status:
Approved IMA 1976
Locality:
Branchville, in the town of Redding, Fairfield Co., Connecticut.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[010] Indistinct
Color:
white, yellowish white, colorless, reddish brown, or dark brown.
Density:
3.1
Diaphaniety:
Transparent to Translucent
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., Crystalline - Fine - Occurs as well-formed fine sized crystals.,
Hardness:
3.5 - Copper Penny
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Resinous
Streak:
white
More details...